Global Patent Index - EP 2007981 B1

EP 2007981 B1 20210120 - WIND TURBINE WITH SLENDER BLADE

Title (en)

WIND TURBINE WITH SLENDER BLADE

Title (de)

WINDTURBINE MIT SCHLANKER SCHAUFEL

Title (fr)

ÉOLIENNE À PALES ÉFFILÉES

Publication

EP 2007981 B1 20210120 (EN)

Application

EP 07747361 A 20070402

Priority

  • NL 2007050137 W 20070402
  • NL 1031492 A 20060402
  • NL 2000302 A 20061103

Abstract (en)

[origin: WO2007114698A2] Wind turbine with a rotor blade wherein said blade is relatively insensitive to turbulence because it is more slender than according to the prior art and is nevertheless able to generate sufficient lift by virtue of the fact that flow enhancing means such as vortex generators combat flow separation. The slenderness is defined by the chord numbers C and D of which C is defined as C = Nc <SUB>r</SUB>

IPC 8 full level

F03D 7/02 (2006.01); F03D 1/06 (2006.01)

CPC (source: EP US)

F03D 1/0633 (2013.01 - EP US); F03D 1/0641 (2013.01 - EP US); F03D 7/0256 (2013.01 - EP US); F05B 2240/122 (2013.01 - US); F05B 2240/3062 (2020.08 - EP); Y02E 10/72 (2013.01 - EP US)

Citation (opposition)

Opponent : LM Wind Power A/S

  • EP 0663527 A1 19950719 - MIDWEST RESEARCH INST [US]
  • WO 0015961 A1 20000323 - LM GLASFIBER AS [DK], et al
  • EP 1152148 A1 20011107 - ENRON WIND ENERGY SYSTEMS CO [US]
  • WO 0116482 A1 20010308 - STICHTING ENERGIE [NL], et al
  • US 6068446 A 20000530 - TANGLER JAMES L [US], et al
  • FUGLSANG P, BAK C: "DEVELOPMENT OF THE RISO WIND TURBINE AIRFOILS", WIND ENERGY, WILEY, CHICHESTER, GB, vol. 07, no. 02, 1 January 2004 (2004-01-01), GB , pages 145 - 162, XP008068651, ISSN: 1099-1824, DOI: 10.1002/we.117
  • PETER FUGLSANG ET AL: "Design and Verification of the Risø-B1 Airfoil Family for Wind Turbines", J. SOL. ENERGY ENG., vol. 126, no. 4, November 2004 (2004-11-01), pages 1002 - 1010, XP055430802
  • G. E. MILLER: "Comparative performance tests on the Mod-2, 2.5-mW wind turbine with and without vortex generators", DOE/NASA WORKSHOP ON HORIZONTAL AXIS WIND TURBINE TECHNOLOGY N95- 27978, 1 May 1995 (1995-05-01), Seattle, Washington, pages 67, XP055464339, Retrieved from the Internet <URL:https://ntrs.nasa.gov/api/citations/19950021557/downloads/19950021557.pdf>
  • SULLIVAN, T. L.: "Effect of vortex generators on the power conversion performance and structural dynamic loads of the Mod-2 wind turbine", NASA-TM-83680, E-2131, DOE/NASA/20320-59, NAS 1.15:83680, 1 June 1984 (1984-06-01), Cleveland, OH, United States, XP055517849
  • BOEING ENGINEERING AND CONSTRUCTION COMPANY: "Mod-2 Wind turbine System Development Final Report, Volume II- Detailed Report", DOE/NASA/0002-2 NASA CR-168007, 1 September 1982 (1982-09-01), pages 1 - C-1, XP055635895, Retrieved from the Internet <URL:https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19830025072.pdf> [retrieved on 20191025]
  • FUGLSANG P. ET AL: "Wind tunnel tests of the FFA-W3-241, FFA-W3-301 and NACA 63-430 airfoils", RISØ-R-1041(EN), December 1998 (1998-12-01), XP055856557, Retrieved from the Internet <URL:https://backend.orbit.dtu.dk/ws/portalfiles/portal/7751459/ris_r_1041.pdf>
  • CORTEN G. P.: "Flow Separation on Wind Turbine Blades", THESIS, 16 January 2001 (2001-01-16), XP055856559, Retrieved from the Internet <URL:https://dspace.library.uu.nl/bitstream/handle/1874/653/full.pdf>
  • WESTERGAARD: "Phenomenological Model of vortex generators", CONFERENCE PAPER: INTERNATIONAL ENERGY AGENCY, AERODYNAMICS OF WIND TURBINES, 9TH SYMPOSIUM, AT THE AERONAUTICAL INST. OF SWEDEN, (FFA, December 1995 (1995-12-01), Stockholm, pages 1 - 7, XP055856555
  • GYATT G. W.: "DEVELOPMENT AND TESTING OF VORTEX GENERATORS FOR SMALL HORIZONTAL AXIS WIND TURBINES.", FINAL REPORT DOE/NASA/0367-1, 1 July 1986 (1986-07-01), XX , XP000861589
  • TANGLER: "Status of the Special-Purpose Airfoil Families", SERI/TP-217 -3264, December 1987 (1987-12-01), XP055856560, Retrieved from the Internet <URL:https://www.nrel.gov/docs/legosti/old/3264.pdf>
  • WETZEL: "Influence of Vortex Generators on NREL S807 Airfoil Aerodynamic Characteristics and Wind Turbine Performance", FAROKHI; WIND ENGINEERING, vol. 19, no. 3, 1995, pages 157 - 165, XP000516437
  • DAYTON A GRIFFIN, ET AL.: "Investigation of vortex generators for augmentation of wind turbine power performance", NREL TECHNICAL MONITOR NREL/SR-440-21399, 1 December 1996 (1996-12-01), XP055390597, Retrieved from the Internet <URL:https://www.nrel.gov/docs/legosti/old/21399.pdf> [retrieved on 20170713]
  • AIRFOIL S815, Retrieved from the Internet <URL:http://airfoiltools.com>

Opponent : Nordex Energy SE & Co. KG

  • WO 2007114698 A2 20071011 - CORTEN GUSTAVE PAUL [NL]
  • WO 0015961 A1 20000323 - LM GLASFIBER AS [DK], et al
  • WO 0116482 A1 20010308 - STICHTING ENERGIE [NL], et al
  • EP 1152148 A1 20011107 - ENRON WIND ENERGY SYSTEMS CO [US]
  • FUGLSANG: "Design and verification of Risø B1 airfoil family for wind turbines", TRANSACTIONS OF ASME, vol. 126, November 2004 (2004-11-01), pages 1002 - 1010, XP055430802
  • ANONYMOUS: "Parametric Study for Large Wind Turbine Blades: WindPACT Blade System Design Studies, SAND2002-2519", SANDIA NATIONAL LABORATORIES, February 2010 (2010-02-01), pages 1 - 43, XP055276962
  • G.W. GYATT: "Development and testing of Vortex-generators for small horizontal axes wind turbines", FINAL REPORT DOE/NASA/0367-1, pages 1 - 45, XP000861589
  • FUGLSANG P; ANTONIOU I; DAHL K S MADSEN HELGE: "General rights Copyright and moral rights for Wind tunnel tests of the FFA-W3-241, FFA-W3-301 and NACA 63-430 airfoils", RISØ-R-1041(EN), 1 December 1998 (1998-12-01), pages 1 - 162, XP055856557
  • G. CORTEN: "Flow separation on wind turbine blades", DISSERTATION, pages 1 - 169, XP055856559
  • HANSEN M O L; CARSTEN HEIN WESTERGAARD: "Phenomenological model of Vortex-Generators", INTERNATIONAL ENERGY AGENCY, AERODYNAMICS OF WIND TURBINES, 9TH SYMPOSIUMAT: THE AERONAUTICAL INST. OF SWEDEN, (FFA), pages 1 - 7, XP055856555
  • DAYTON A. GRIFFIN: "Investigation of Vortex Generators for Augmentation of Wind Turbine Power Performance", NREL TECHNICAL MONITOR NREL/SR-440-21399, 1 December 1996 (1996-12-01), pages 1 - 78, XP055390597
  • ANONYMOUS: "Innovative design approaches for large wind turbine blades, final report", SANDIA REPORT 2004-0074, 1 May 2004 (2004-05-01), pages 1 - 43, XP055276869

Opponent : Siemens Gamesa Renewable Energy GmbH & Co. KG,

  • EP 0675285 A1 19951004 - MIDWEST RESEARCH INST [US]
  • WO 0015961 A1 20000323 - LM GLASFIBER AS [DK], et al
  • WO 0116482 A1 20010308 - STICHTING ENERGIE [NL], et al
  • EP 1314885 A1 20030528 - BONUS ENERGY AS [DK]
  • WO 2006090215 A1 20060831 - VESTAS WIND SYS AS [DK], et al
  • US 6068446 A 20000530 - TANGLER JAMES L [US], et al
  • US 5417548 A 19950523 - TANGLER JAMES L [US], et al
  • EP 1152148 A1 20011107 - ENRON WIND ENERGY SYSTEMS CO [US]
  • WO 9201865 A1 19920206 - HOWDEN WIND TURBINES LTD [GB]
  • W. A. TIMMER, R. P. J. O. M. VAN ROOIJ: "Summary of the Delft University Wind Turbine Dedicated Airfoils", JOURNAL OF SOLAR ENERGY ENGINEERING., ASME INTERNATIONAL, US, vol. 125, no. 4, 1 January 2003 (2003-01-01), US , pages 488 - 496, XP055586939, ISSN: 0199-6231, DOI: 10.1115/1.1626129
  • PETER FUGLSANG: "Design and Verification of the Risø-B1 Airfoil Family for Wind Turbines", TRANSACTIONS OF ASME, vol. 126, 1 November 2004 (2004-11-01), pages 1002 - 1010, XP055430802
  • FUGLSANG P, BAK C: "DEVELOPMENT OF THE RISO WIND TURBINE AIRFOILS", WIND ENERGY, WILEY, CHICHESTER, GB, vol. 07, no. 02, 1 January 2004 (2004-01-01), GB , pages 145 - 162, XP008068651, ISSN: 1099-1824, DOI: 10.1002/we.117
  • VAN ROOIJ R P J O M ; TIMMER W A: "ROUGHNESS SENSITIVITY CONSIDERATIONS FOR THICK ROTOR BLADE AIRFOILS", JOURNAL OF SOLAR ENERGY ENGINEERING., ASME INTERNATIONAL, US, vol. 125, no. 4, 1 November 2003 (2003-11-01), US , pages 468 - 478, XP008079790, ISSN: 0199-6231, DOI: 10.1115/1.1624614

Designated contracting state (EPC)

DE DK ES GB PT

DOCDB simple family (publication)

WO 2007114698 A2 20071011; WO 2007114698 A3 20071206; WO 2007114698 A8 20081127; AU 2007232546 A1 20071011; AU 2007232546 A2 20081211; BR PI0709855 A2 20110726; CA 2647499 A1 20071011; CA 2647499 C 20160614; CN 101454564 A 20090610; CN 101454564 B 20140423; DK 2007981 T3 20210301; EP 2007981 A2 20081231; EP 2007981 B1 20210120; EP 3617496 A1 20200304; ES 2855106 T3 20210923; PT 2007981 T 20210211; US 2009068018 A1 20090312; US 8182231 B2 20120522

DOCDB simple family (application)

NL 2007050137 W 20070402; AU 2007232546 A 20070402; BR PI0709855 A 20070402; CA 2647499 A 20070402; CN 200780019244 A 20070402; DK 07747361 T 20070402; EP 07747361 A 20070402; EP 19188863 A 20070402; ES 07747361 T 20070402; PT 07747361 T 20070402; US 24418608 A 20081002